| Dubuque to Beyne-Heusay | 4,279.70 mi (6,887.52 km) |
| Dubuque to Bierbeek | 4,239.24 mi (6,822.39 km) |
| Dubuque to Bilzen | 4,265.26 mi (6,864.27 km) |
| Dubuque to Binche | 4,233.60 mi (6,813.33 km) |
| Dubuque to Bissegem | 4,183.00 mi (6,731.88 km) |
| Dubuque to Blankenberge | 4,161.52 mi (6,697.32 km) |
| Dubuque to Blegny | 4,280.81 mi (6,889.30 km) |
| Dubuque to Bocholt | 4,255.84 mi (6,849.11 km) |
| Dubuque to Boechout | 4,216.96 mi (6,786.55 km) |
| Dubuque to Bonheiden | 4,223.17 mi (6,796.54 km) |
| Dubuque to Boom | 4,215.22 mi (6,783.75 km) |
| Dubuque to Boortmeerbeek | 4,226.27 mi (6,801.53 km) |
| Dubuque to Borgerhout | 4,213.10 mi (6,780.33 km) |
| Dubuque to Borgloon | 4,261.43 mi (6,858.10 km) |
| Dubuque to Bornem | 4,209.73 mi (6,774.91 km) |
